Crystallinity and thermal stability of LDH/polypropylene nanocomposites

Polypropylene nanocomposites were prepared with Mg–Al layered double hydroxide (LDH) intercalated with dodecylsulfonate/itaconic acid. We investigated the influence of the organo-LDHs on some properties of the nanocomposites, such as crystallinity, thermal stability and combustion performance. The n...

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Bibliographic Details
Published in:Applied clay science 2010-09, Vol.50 (1), p.87-91
Main Authors: Shi, Yanqin, Chen, Feng, Yang, Jingtao, Zhong, Mingqiang
Format: Article
Language:English
Subjects:
Crystallinity
Earth sciences
Earth, ocean, space
Exact sciences and technology
Layered double hydroxide
Mineralogy
Nanocomposite
Polypropylene
Silicates
Thermal stability
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Summary:Polypropylene nanocomposites were prepared with Mg–Al layered double hydroxide (LDH) intercalated with dodecylsulfonate/itaconic acid. We investigated the influence of the organo-LDHs on some properties of the nanocomposites, such as crystallinity, thermal stability and combustion performance. The nanocomposites were characterized by means of X-ray diffraction, transmission electron microscopy and thermogravimetric analysis. The addition of the LDHs increased the crystallinity of the polypropylene and thermal stability of the nanocomposites and retarded the flammability. ►The interlayer distance of the LDH was expanded to 2.75 nm used by SDS and SI. ►The modified LDHs were exfoliated in the PP/LDH nanocomposites. ►Heterogeneous nucleation of the modified LDHs was observed in the nanocomposites. ►The thermal stability of the nanocomposites was improved. ►The inflaming retarding of the nanocomposites was prolonged.
ISSN:0169-1317
1872-9053
DOI:10.1016/j.clay.2010.07.007